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Merge "ARI: Channels added to Stasis application during WebSocket creation ..."

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changes/27/1027/1
Mark Michelson 10 years ago committed by Gerrit Code Review
parent 92ddda68aa fe804b09b3
commit b002e09214
11 changed files with 477 additions and 171 deletions
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10
include/asterisk/ari.h
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@ -187,6 +187,16 @@ struct ast_json *ast_ari_websocket_session_read(
int ast_ari_websocket_session_write(struct ast_ari_websocket_session *session, int ast_ari_websocket_session_write(struct ast_ari_websocket_session *session,
struct ast_json *message); struct ast_json *message);
/*!
* \brief Get the Session ID for an ARI WebSocket.
*
* \param session Session to query.
* \return Session ID.
* \return \c NULL on error.
*/
const char *ast_ari_websocket_session_id(
const struct ast_ari_websocket_session *session);
/*! /*!
* \brief The stock message to return when out of memory. * \brief The stock message to return when out of memory.
* *

2
include/asterisk/astobj2.h
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@ -1642,7 +1642,7 @@ void *__ao2_unlink(struct ao2_container *c, void *obj, int flags,
* The use of flags argument is the follow: * The use of flags argument is the follow:
* *
* OBJ_UNLINK unlinks the object found * OBJ_UNLINK unlinks the object found
* OBJ_NODATA on match, do return an object * OBJ_NODATA on match, do not return an object
* Callbacks use OBJ_NODATA as a default * Callbacks use OBJ_NODATA as a default
* functions such as find() do * functions such as find() do
* OBJ_MULTIPLE return multiple matches * OBJ_MULTIPLE return multiple matches

10
include/asterisk/http_websocket.h
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@ -77,13 +77,14 @@ struct ast_websocket;
* \param ser The TCP/TLS session * \param ser The TCP/TLS session
* \param parameters Parameters extracted from the request URI * \param parameters Parameters extracted from the request URI
* \param headers Headers included in the request * \param headers Headers included in the request
* \param session_id The id of the current session.
* *
* \retval 0 The session should be accepted * \retval 0 The session should be accepted
* \retval -1 The session should be rejected. Note that the caller must send an error * \retval -1 The session should be rejected. Note that the caller must send an error
* response using \ref ast_http_error. * response using \ref ast_http_error.
* \since 13.5.0 * \since 13.5.0
*/ */
typedef int (*ast_websocket_pre_callback)(struct ast_tcptls_session_instance *ser, struct ast_variable *parameters, struct ast_variable *headers); typedef int (*ast_websocket_pre_callback)(struct ast_tcptls_session_instance *ser, struct ast_variable *parameters, struct ast_variable *headers, const char *session_id);
/*! /*!
* \brief Callback for when a new connection for a sub-protocol is established * \brief Callback for when a new connection for a sub-protocol is established
@ -359,6 +360,13 @@ AST_OPTIONAL_API(int, ast_websocket_is_secure, (struct ast_websocket *session),
*/ */
AST_OPTIONAL_API(int, ast_websocket_set_nonblock, (struct ast_websocket *session), { errno = ENOSYS; return -1;}); AST_OPTIONAL_API(int, ast_websocket_set_nonblock, (struct ast_websocket *session), { errno = ENOSYS; return -1;});
/*!
* \brief Get the session ID for a WebSocket session.
*
* \retval session id
*/
AST_OPTIONAL_API(const char *, ast_websocket_session_id, (struct ast_websocket *session), { errno = ENOSYS; return NULL;});
/*! /*!
* \brief Result code for a websocket client. * \brief Result code for a websocket client.
*/ */

2
include/asterisk/vector.h
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@ -110,7 +110,7 @@
/*! /*!
* \brief Deallocates this vector. * \brief Deallocates this vector.
* *
* If any code to free the elements of this vector need to be run, that should * If any code to free the elements of this vector needs to be run, that should
* be done prior to this call. * be done prior to this call.
* *
* \param vec Vector to deallocate. * \param vec Vector to deallocate.

8
res/ari/ari_websockets.c
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@ -153,7 +153,7 @@ struct ast_json *ast_ari_websocket_session_read(
"{" \ "{" \
" \"error\": \"InvalidMessage\"," \ " \"error\": \"InvalidMessage\"," \
" \"message\": \"Message validation failed\"" \ " \"message\": \"Message validation failed\"" \
"}" "}"
int ast_ari_websocket_session_write(struct ast_ari_websocket_session *session, int ast_ari_websocket_session_write(struct ast_ari_websocket_session *session,
struct ast_json *message) struct ast_json *message)
@ -196,3 +196,9 @@ void ari_handle_websocket(struct ast_websocket_server *ws_server,
ast_websocket_uri_cb(ser, &fake_urih, uri, method, get_params, ast_websocket_uri_cb(ser, &fake_urih, uri, method, get_params,
headers); headers);
} }
const char *ast_ari_websocket_session_id(
const struct ast_ari_websocket_session *session)
{
return ast_websocket_session_id(session->ws_session);
}

518
res/ari/resource_events.c
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@ -27,226 +27,455 @@
ASTERISK_REGISTER_FILE() ASTERISK_REGISTER_FILE()
#include "resource_events.h"
#include "asterisk/astobj2.h" #include "asterisk/astobj2.h"
#include "asterisk/stasis_app.h" #include "asterisk/stasis_app.h"
#include "resource_events.h" #include "asterisk/vector.h"
/*! Number of buckets for the Stasis application hash table. Remember to keep it /*! Number of buckets for the event session registry. Remember to keep it a prime number! */
* a prime number! #define EVENT_SESSION_NUM_BUCKETS 23
*/
/*! Number of buckets for a websocket apps container. Remember to keep it a prime number! */
#define APPS_NUM_BUCKETS 7 #define APPS_NUM_BUCKETS 7
/*! \brief A connection to the event WebSocket */ /*! Initial size of a message queue. */
#define MESSAGES_INIT_SIZE 23
/*! \brief A wrapper for the /ref ast_ari_websocket_session. */
struct event_session { struct event_session {
struct ast_ari_websocket_session *ws_session; struct ast_ari_websocket_session *ws_session; /*!< Handle to the websocket session. */
struct ao2_container *websocket_apps; struct ao2_container *websocket_apps; /*!< List of Stasis apps registered to
the websocket session. */
AST_VECTOR(, struct ast_json *) message_queue; /*!< Container for holding delayed messages. */
char session_id[]; /*!< The id for the websocket session. */
}; };
/*! \brief \ref event_session error types. */
enum event_session_error_type {
ERROR_TYPE_STASIS_REGISTRATION = 1, /*!< Stasis failed to register the application. */
ERROR_TYPE_OOM = 2, /*!< Insufficient memory to create the event
session. */
ERROR_TYPE_MISSING_APP_PARAM = 3, /*!< HTTP request was missing an [app] parameter. */
ERROR_TYPE_INVALID_APP_PARAM = 4, /*!< HTTP request contained an invalid [app]
parameter. */
};
/*! \brief Local registry for created \ref event_session objects. */
static struct ao2_container *event_session_registry;
/*! /*!
* \brief Explicitly shutdown a session. * \brief Callback handler for Stasis application messages.
* *
* An explicit shutdown is necessary, since stasis-app has a reference to this * \internal
* session. We also need to be sure to null out the \c ws_session field, since
* the websocket is about to go away.
* *
* \param session Session info struct. * \param data Void pointer to the event session (\ref event_session).
* \param app_name Name of the Stasis application that dispatched the message.
* \param message The dispatched message.
*/ */
static void session_shutdown(struct event_session *session) static void stasis_app_message_handler(
void *data, const char *app_name, struct ast_json *message)
{ {
struct ao2_iterator i; struct event_session *session = data;
char *app; const char *msg_type, *msg_application;
SCOPED_AO2LOCK(lock, session);
ast_assert(session != NULL);
ao2_lock(session);
msg_type = S_OR(ast_json_string_get(ast_json_object_get(message, "type")), "");
msg_application = S_OR(
ast_json_string_get(ast_json_object_get(message, "application")), "");
i = ao2_iterator_init(session->websocket_apps, 0); /* If we've been replaced, remove the application from our local
while ((app = ao2_iterator_next(&i))) { websocket_apps container */
stasis_app_unregister(app); if (strcmp(msg_type, "ApplicationReplaced") == 0 &&
ao2_cleanup(app); strcmp(msg_application, app_name) == 0) {
ao2_find(session->websocket_apps, msg_application,
OBJ_UNLINK | OBJ_NODATA);
} }
ao2_iterator_destroy(&i);
ao2_cleanup(session->websocket_apps);
session->websocket_apps = NULL; /* Now, we need to determine our state to see how we will handle the message */
session->ws_session = NULL; if (ast_json_object_set(message, "application", ast_json_string_create(app_name))) {
/* We failed to add an application element to our json message */
ast_log(LOG_WARNING,
"Failed to dispatch '%s' message from Stasis app '%s'; could not update message\n",
msg_type,
msg_application);
} else if (!session->ws_session) {
/* If the websocket is NULL, the message goes to the queue */
AST_VECTOR_APPEND(&session->message_queue, message);
ast_log(LOG_WARNING,
"Queued '%s' message for Stasis app '%s'; websocket is not ready\n",
msg_type,
msg_application);
} else {
/* We are ready to publish the message */
ast_ari_websocket_session_write(session->ws_session, message);
}
ao2_unlock(session);
} }
static void session_dtor(void *obj) /*!
* \brief AO2 comparison function for \ref event_session objects.
*
* \internal
*
* \param obj Void pointer to the \ref event_session container.
* \param arg Void pointer to the \ref event_session object.
* \param flags The \ref search_flags to use when creating the hash key.
*
* \retval 0 The objects are not equal.
* \retval CMP_MATCH The objects are equal.
*/
static int event_session_compare(void *obj, void *arg, int flags)
{ {
#ifdef AST_DEVMODE /* Avoid unused variable warning */ const struct event_session *object_left = obj;
struct event_session *session = obj; const struct event_session *object_right = arg;
#endif const char *right_key = arg;
int cmp = 0;
switch (flags & OBJ_SEARCH_MASK) {
case OBJ_SEARCH_OBJECT:
right_key = object_right->session_id;
/* Fall through */
case OBJ_SEARCH_KEY:
cmp = strcmp(object_left->session_id, right_key);
break;
case OBJ_SEARCH_PARTIAL_KEY:
cmp = strncmp(object_left->session_id, right_key, strlen(right_key));
break;
default:
break;
}
/* session_shutdown should have been called before */ return cmp ? 0 : CMP_MATCH;
ast_assert(session->ws_session == NULL); }
ast_assert(session->websocket_apps == NULL);
/*!
* \brief AO2 hash function for \ref event_session objects.
*
* \details Computes hash value for the given \ref event_session, with respect to the
* provided search flags.
*
* \internal
*
* \param obj Void pointer to the \ref event_session object.
* \param flags The \ref search_flags to use when creating the hash key.
*
* \retval > 0 on success
* \retval 0 on failure
*/
static int event_session_hash(const void *obj, const int flags)
{
const struct event_session *session;
const char *key;
switch (flags & OBJ_SEARCH_MASK) {
case OBJ_SEARCH_KEY:
key = obj;
break;
case OBJ_SEARCH_OBJECT:
session = obj;
key = session->session_id;
break;
default:
/* Hash can only work on something with a full key. */
ast_assert(0);
return 0;
}
return ast_str_hash(key);
} }
static void session_cleanup(struct event_session *session) /*!
* \brief Explicitly shutdown a session.
*
* \details An explicit shutdown is necessary, since the \ref stasis_app has a reference
* to this session. We also need to be sure to null out the \c ws_session field,
* since the websocket is about to go away.
*
* \internal
*
* \param session Event session object (\ref event_session).
*/
static void event_session_shutdown(struct event_session *session)
{ {
session_shutdown(session); struct ao2_iterator i;
ao2_cleanup(session); char *app;
int j;
SCOPED_AO2LOCK(lock, session);
/* Clean up the websocket_apps container */
if (session->websocket_apps) {
i = ao2_iterator_init(session->websocket_apps, 0);
while ((app = ao2_iterator_next(&i))) {
stasis_app_unregister(app);
ao2_cleanup(app);
}
ao2_iterator_destroy(&i);
ao2_cleanup(session->websocket_apps);
session->websocket_apps = NULL;
}
/* Clean up the message_queue container */
for (j = 0; j < AST_VECTOR_SIZE(&session->message_queue); j++) {
struct ast_json *msg = AST_VECTOR_GET(&session->message_queue, j);
ast_json_unref(msg);
}
AST_VECTOR_FREE(&session->message_queue);
/* Remove the handle to the underlying websocket session */
session->ws_session = NULL;
} }
static struct event_session *session_create( /*!
struct ast_ari_websocket_session *ws_session) * \brief Updates the websocket session for an \ref event_session.
*
* \details The websocket for the given \ref event_session will be updated to the value
* of the \c ws_session argument.
*
* If the value of the \c ws_session is not \c NULL and there are messages in the
* event session's \c message_queue, the messages are dispatched and removed from
* the queue.
*
* \internal
*
* \param session The event session object to update (\ref event_session).
* \param ws_session Handle to the underlying websocket session
* (\ref ast_ari_websocket_session).
*/
static void event_session_update_websocket(
struct event_session *session, struct ast_ari_websocket_session *ws_session)
{ {
RAII_VAR(struct event_session *, session, NULL, ao2_cleanup); int i;
ast_assert(session != NULL);
session = ao2_alloc(sizeof(*session), session_dtor); ao2_lock(session);
session->ws_session = ws_session; session->ws_session = ws_session;
session->websocket_apps =
ast_str_container_alloc(APPS_NUM_BUCKETS);
if (!session->websocket_apps) { for (i = 0; i < AST_VECTOR_SIZE(&session->message_queue); i++) {
return NULL; struct ast_json *msg = AST_VECTOR_GET(&session->message_queue, i);
ast_ari_websocket_session_write(session->ws_session, msg);
ast_json_unref(msg);
} }
ao2_ref(session, +1); AST_VECTOR_RESET(&session->message_queue, AST_VECTOR_ELEM_CLEANUP_NOOP);
return session; ao2_unlock(session);
} }
/*! /*!
* \brief Callback handler for Stasis application messages. * \brief Processes cleanup actions for a \ref event_session object.
*
* \internal
*
* \param session The event session object to cleanup (\ref event_session).
*/ */
static void app_handler(void *data, const char *app_name, static void event_session_cleanup(struct event_session *session)
struct ast_json *message)
{ {
struct event_session *session = data;
int res;
const char *msg_type = S_OR(
ast_json_string_get(ast_json_object_get(message, "type")),
"");
const char *msg_application = S_OR(
ast_json_string_get(ast_json_object_get(message, "application")),
"");
if (!session) { if (!session) {
return; return;
} }
/* Determine if we've been replaced */
if (strcmp(msg_type, "ApplicationReplaced") == 0 &&
strcmp(msg_application, app_name) == 0) {
ao2_find(session->websocket_apps, msg_application,
OBJ_UNLINK | OBJ_NODATA);
}
res = ast_json_object_set(message, "application", event_session_shutdown(session);
ast_json_string_create(app_name)); ao2_unlink(event_session_registry, session);
if(res != 0) { }
return;
}
ao2_lock(session); /*!
if (session->ws_session) { * \brief Event session object destructor (\ref event_session).
ast_ari_websocket_session_write(session->ws_session, message); *
} * \internal
ao2_unlock(session); *
* \param obj Void pointer to the \ref event_session object.
*/
static void event_session_dtor(void *obj)
{
#ifdef AST_DEVMODE /* Avoid unused variable warning */
struct event_session *session = obj;
#endif
/* event_session_shutdown should have been called before now */
ast_assert(session->ws_session == NULL);
ast_assert(session->websocket_apps == NULL);
ast_assert(AST_VECTOR_SIZE(&session->message_queue) == 0);
} }
/*! /*!
* \brief Register for all of the apps given. * \brief Handles \ref event_session error processing.
* \param session Session info struct. *
* \param app_name Name of application to register. * \internal
*
* \param session The \ref event_session object.
* \param error The \ref event_session_error_type to handle.
* \param ser HTTP TCP/TLS Server Session (\ref ast_tcptls_session_instance).
*
* \retval -1 Always returns -1.
*/ */
static int session_register_app(struct event_session *session, static int event_session_allocation_error_handler(
const char *app_name) struct event_session *session, enum event_session_error_type error,
struct ast_tcptls_session_instance *ser)
{ {
SCOPED_AO2LOCK(lock, session); /* Notify the client */
switch (error) {
case ERROR_TYPE_STASIS_REGISTRATION:
ast_http_error(ser, 500, "Internal Server Error",
"Stasis registration failed");
break;
ast_assert(session->ws_session != NULL); case ERROR_TYPE_OOM:
ast_assert(session->websocket_apps != NULL); ast_http_error(ser, 500, "Internal Server Error",
"Allocation failed");
break;
if (ast_strlen_zero(app_name)) { case ERROR_TYPE_MISSING_APP_PARAM:
return -1; ast_http_error(ser, 400, "Bad Request",
} "HTTP request is missing param: [app]");
break;
if (ast_str_container_add(session->websocket_apps, app_name)) { case ERROR_TYPE_INVALID_APP_PARAM:
ast_ari_websocket_session_write(session->ws_session, ast_http_error(ser, 400, "Bad Request",
ast_ari_oom_json()); "Invalid application provided in param [app].");
return -1; break;
}
stasis_app_register(app_name, app_handler, session); default:
break;
}
return 0; /* Cleanup the session */
event_session_cleanup(session);
return -1;
} }
int ast_ari_websocket_events_event_websocket_attempted(struct ast_tcptls_session_instance *ser, /*!
struct ast_variable *headers, * \brief Creates an \ref event_session object and registers its apps with Stasis.
struct ast_ari_events_event_websocket_args *args) *
* \internal
*
* \param ser HTTP TCP/TLS Server Session (\ref ast_tcptls_session_instance).
* \param args The Stasis [app] parameters as parsed from the HTTP request
* (\ref ast_ari_events_event_websocket_args).
* \param session_id The id for the websocket session that will be created for this
* event session.
*
* \retval 0 on success
* \retval -1 on failure
*/
static int event_session_alloc(struct ast_tcptls_session_instance *ser,
struct ast_ari_events_event_websocket_args *args, const char *session_id)
{ {
int res = 0; RAII_VAR(struct event_session *, session, NULL, ao2_cleanup);
size_t i, j; size_t size, i;
ast_debug(3, "/events WebSocket attempted\n");
/* The request must have at least one [app] parameter */
if (args->app_count == 0) { if (args->app_count == 0) {
ast_http_error(ser, 400, "Bad Request", "Missing param 'app'"); return event_session_allocation_error_handler(
return -1; session, ERROR_TYPE_MISSING_APP_PARAM, ser);
}
size = sizeof(*session) + strlen(session_id) + 1;
/* Instantiate the event session */
session = ao2_alloc(size, event_session_dtor);
if (!session) {
return event_session_allocation_error_handler(session, ERROR_TYPE_OOM, ser);
} }
strncpy(session->session_id, session_id, size - sizeof(*session));
/* Instantiate the hash table for Stasis apps */
session->websocket_apps =
ast_str_container_alloc(APPS_NUM_BUCKETS);
if (!session->websocket_apps) {
return event_session_allocation_error_handler(session, ERROR_TYPE_OOM, ser);
}
/* Instantiate the message queue */
if (AST_VECTOR_INIT(&session->message_queue, MESSAGES_INIT_SIZE)) {
return event_session_allocation_error_handler(session, ERROR_TYPE_OOM, ser);
}
/* Register the apps with Stasis */
for (i = 0; i < args->app_count; ++i) { for (i = 0; i < args->app_count; ++i) {
if (ast_strlen_zero(args->app[i])) { const char *app = args->app[i];
res = -1;
break; if (ast_strlen_zero(app)) {
return event_session_allocation_error_handler(
session, ERROR_TYPE_INVALID_APP_PARAM, ser);
} }
res |= stasis_app_register(args->app[i], app_handler, NULL); if (ast_str_container_add(session->websocket_apps, app)) {
} return event_session_allocation_error_handler(session, ERROR_TYPE_OOM, ser);
}
if (res) { if (stasis_app_register(app, stasis_app_message_handler, session)) {
for (j = 0; j < i; ++j) { ast_log(LOG_WARNING, "Stasis registration failed for application: '%s'\n", app);
stasis_app_unregister(args->app[j]); return event_session_allocation_error_handler(
session, ERROR_TYPE_STASIS_REGISTRATION, ser);
} }
ast_http_error(ser, 400, "Bad Request", "Invalid application provided in param 'app'.");
} }
return res; /* Add the event session to the local registry */
if (!ao2_link(event_session_registry, session)) {
return event_session_allocation_error_handler(session, ERROR_TYPE_OOM, ser);
}
return 0;
} }
void ast_ari_websocket_events_event_websocket_established(struct ast_ari_websocket_session *ws_session, int ast_ari_websocket_events_event_websocket_init(void)
struct ast_variable *headers,
struct ast_ari_events_event_websocket_args *args)
{ {
RAII_VAR(struct event_session *, session, NULL, session_cleanup); /* Try to instantiate the registry */
struct ast_json *msg; event_session_registry = ao2_container_alloc(EVENT_SESSION_NUM_BUCKETS,
int res; event_session_hash,
size_t i; event_session_compare);
if (!event_session_registry) {
/* This is bad, bad. */
ast_log(LOG_WARNING,
"Failed to allocate the local registry for websocket applications\n");
return -1;
}
ast_debug(3, "/events WebSocket connection\n"); return 0;
}
session = session_create(ws_session); int ast_ari_websocket_events_event_websocket_attempted(
if (!session) { struct ast_tcptls_session_instance *ser, struct ast_variable *headers,
ast_ari_websocket_session_write(ws_session, ast_ari_oom_json()); struct ast_ari_events_event_websocket_args *args, const char *session_id)
return; {
} ast_debug(3, "/events WebSocket attempted\n");
res = 0; /* Create the event session */
for (i = 0; i < args->app_count; ++i) { return event_session_alloc(ser, args, session_id);
if (ast_strlen_zero(args->app[i])) { }
continue;
}
res |= session_register_app(session, args->app[i]);
}
if (ao2_container_count(session->websocket_apps) == 0) { void ast_ari_websocket_events_event_websocket_established(
RAII_VAR(struct ast_json *, msg, NULL, ast_json_unref); struct ast_ari_websocket_session *ws_session, struct ast_variable *headers,
struct ast_ari_events_event_websocket_args *args)
{
RAII_VAR(struct event_session *, session, NULL, event_session_cleanup);
struct ast_json *msg;
const char *session_id;
msg = ast_json_pack("{s: s, s: [s]}", ast_debug(3, "/events WebSocket established\n");
"type", "MissingParams",
"params", "app");
if (!msg) {
msg = ast_json_ref(ast_ari_oom_json());
}
ast_ari_websocket_session_write(session->ws_session, msg); ast_assert(ws_session != NULL);
return;
}
if (res != 0) { session_id = ast_ari_websocket_session_id(ws_session);
ast_ari_websocket_session_write(ws_session, ast_ari_oom_json());
return; /* Find the event_session and update its websocket */
session = ao2_find(event_session_registry, session_id, OBJ_SEARCH_KEY);
if (session) {
ao2_unlink(event_session_registry, session);
event_session_update_websocket(session, ws_session);
} else {
ast_log(LOG_WARNING,
"Failed to locate an event session for the provided websocket session\n");
} }
/* We don't process any input, but we'll consume it waiting for EOF */ /* We don't process any input, but we'll consume it waiting for EOF */
@ -309,4 +538,3 @@ void ast_ari_events_user_event(struct ast_variable *headers,
"Error processing request"); "Error processing request");
} }
} }

16
res/ari/resource_events.h
Unescape View File

@ -49,17 +49,27 @@ struct ast_ari_events_event_websocket_args {
char *app_parse; char *app_parse;
}; };
/*!
* \brief WebSocket connection for events.
*
* \retval 0 success
* \retval -1 error
*/
int ast_ari_websocket_events_event_websocket_init(void);
/*! /*!
* \brief WebSocket connection for events. * \brief WebSocket connection for events.
* *
* \param ser HTTP TCP/TLS Server Session * \param ser HTTP TCP/TLS Server Session
* \param headers HTTP headers * \param headers HTTP headers
* \param args Swagger parameters * \param args Swagger parameters
* \param session_id The id of the current session.
* *
* \retval 0 success * \retval 0 success
* \retval non-zero error * \retval non-zero error
*/ */
int ast_ari_websocket_events_event_websocket_attempted(struct ast_tcptls_session_instance *ser, struct ast_variable *headers, struct ast_ari_events_event_websocket_args *args); int ast_ari_websocket_events_event_websocket_attempted(struct ast_tcptls_session_instance *ser,
struct ast_variable *headers, struct ast_ari_events_event_websocket_args *args, const char *session_id);
/*! /*!
* \brief WebSocket connection for events. * \brief WebSocket connection for events.
@ -67,8 +77,10 @@ int ast_ari_websocket_events_event_websocket_attempted(struct ast_tcptls_session
* \param session ARI WebSocket. * \param session ARI WebSocket.
* \param headers HTTP headers. * \param headers HTTP headers.
* \param args Swagger parameters. * \param args Swagger parameters.
* \param session_id The id of the current session.
*/ */
void ast_ari_websocket_events_event_websocket_established(struct ast_ari_websocket_session *session, struct ast_variable *headers, struct ast_ari_events_event_websocket_args *args); void ast_ari_websocket_events_event_websocket_established(struct ast_ari_websocket_session *session,
struct ast_variable *headers, struct ast_ari_events_event_websocket_args *args);
/*! Argument struct for ast_ari_events_user_event() */ /*! Argument struct for ast_ari_events_user_event() */
struct ast_ari_events_user_event_args { struct ast_ari_events_user_event_args {
/*! Event name */ /*! Event name */

9
res/res_ari_events.c
Unescape View File

@ -53,7 +53,8 @@ ASTERISK_REGISTER_FILE()
#define MAX_VALS 128 #define MAX_VALS 128
static int ast_ari_events_event_websocket_ws_attempted_cb(struct ast_tcptls_session_instance *ser, struct ast_variable *get_params, struct ast_variable *headers) static int ast_ari_events_event_websocket_ws_attempted_cb(struct ast_tcptls_session_instance *ser,
struct ast_variable *get_params, struct ast_variable *headers, const char *session_id)
{ {
struct ast_ari_events_event_websocket_args args = {}; struct ast_ari_events_event_websocket_args args = {};
int res = 0; int res = 0;
@ -113,7 +114,7 @@ static int ast_ari_events_event_websocket_ws_attempted_cb(struct ast_tcptls_sess
{} {}
} }
res = ast_ari_websocket_events_event_websocket_attempted(ser, headers, &args); res = ast_ari_websocket_events_event_websocket_attempted(ser, headers, &args, session_id);
fin: __attribute__((unused)) fin: __attribute__((unused))
if (!response) { if (!response) {
@ -433,6 +434,10 @@ static int load_module(void)
int res = 0; int res = 0;
struct ast_websocket_protocol *protocol; struct ast_websocket_protocol *protocol;
if (ast_ari_websocket_events_event_websocket_init() == -1) {
return AST_MODULE_LOAD_FAILURE;
}
events.ws_server = ast_websocket_server_create(); events.ws_server = ast_websocket_server_create();
if (!events.ws_server) { if (!events.ws_server) {
return AST_MODULE_LOAD_FAILURE; return AST_MODULE_LOAD_FAILURE;

44
res/res_http_websocket.c
Unescape View File

@ -38,6 +38,7 @@ ASTERISK_REGISTER_FILE()
#include "asterisk/file.h" #include "asterisk/file.h"
#include "asterisk/unaligned.h" #include "asterisk/unaligned.h"
#include "asterisk/uri.h" #include "asterisk/uri.h"
#include "asterisk/uuid.h"
#define AST_API_MODULE #define AST_API_MODULE
#include "asterisk/http_websocket.h" #include "asterisk/http_websocket.h"
@ -74,18 +75,19 @@ ASTERISK_REGISTER_FILE()
/*! \brief Structure definition for session */ /*! \brief Structure definition for session */
struct ast_websocket { struct ast_websocket {
FILE *f; /*!< Pointer to the file instance used for writing and reading */ FILE *f; /*!< Pointer to the file instance used for writing and reading */
int fd; /*!< File descriptor for the session, only used for polling */ int fd; /*!< File descriptor for the session, only used for polling */
struct ast_sockaddr address; /*!< Address of the remote client */ struct ast_sockaddr address; /*!< Address of the remote client */
enum ast_websocket_opcode opcode; /*!< Cached opcode for multi-frame messages */ enum ast_websocket_opcode opcode; /*!< Cached opcode for multi-frame messages */
size_t payload_len; /*!< Length of the payload */ size_t payload_len; /*!< Length of the payload */
char *payload; /*!< Pointer to the payload */ char *payload; /*!< Pointer to the payload */
size_t reconstruct; /*!< Number of bytes before a reconstructed payload will be returned and a new one started */ size_t reconstruct; /*!< Number of bytes before a reconstructed payload will be returned and a new one started */
int timeout; /*!< The timeout for operations on the socket */ int timeout; /*!< The timeout for operations on the socket */
unsigned int secure:1; /*!< Bit to indicate that the transport is secure */ unsigned int secure:1; /*!< Bit to indicate that the transport is secure */
unsigned int closing:1; /*!< Bit to indicate that the session is in the process of being closed */ unsigned int closing:1; /*!< Bit to indicate that the session is in the process of being closed */
unsigned int close_sent:1; /*!< Bit to indicate that the session close opcode has been sent and no further data will be sent */ unsigned int close_sent:1; /*!< Bit to indicate that the session close opcode has been sent and no further data will be sent */
struct websocket_client *client; /*!< Client object when connected as a client websocket */ struct websocket_client *client; /*!< Client object when connected as a client websocket */
char session_id[AST_UUID_STR_LEN]; /*!< The identifier for the websocket session */
}; };
/*! \brief Hashing function for protocols */ /*! \brief Hashing function for protocols */
@ -414,6 +416,12 @@ int AST_OPTIONAL_API_NAME(ast_websocket_set_timeout)(struct ast_websocket *sessi
return 0; return 0;
} }
const char * AST_OPTIONAL_API_NAME(ast_websocket_session_id)(struct ast_websocket *session)
{
return session->session_id;
}
/* MAINTENANCE WARNING on ast_websocket_read()! /* MAINTENANCE WARNING on ast_websocket_read()!
* *
* We have to keep in mind during this function that the fact that session->fd seems ready * We have to keep in mind during this function that the fact that session->fd seems ready
@ -764,7 +772,7 @@ int AST_OPTIONAL_API_NAME(ast_websocket_uri_cb)(struct ast_tcptls_session_instan
return 0; return 0;
} }
if (!(session = ao2_alloc(sizeof(*session), session_destroy_fn))) { if (!(session = ao2_alloc(sizeof(*session) + AST_UUID_STR_LEN + 1, session_destroy_fn))) {
ast_log(LOG_WARNING, "WebSocket connection from '%s' could not be accepted\n", ast_log(LOG_WARNING, "WebSocket connection from '%s' could not be accepted\n",
ast_sockaddr_stringify(&ser->remote_address)); ast_sockaddr_stringify(&ser->remote_address));
websocket_bad_request(ser); websocket_bad_request(ser);
@ -773,8 +781,16 @@ int AST_OPTIONAL_API_NAME(ast_websocket_uri_cb)(struct ast_tcptls_session_instan
} }
session->timeout = AST_DEFAULT_WEBSOCKET_WRITE_TIMEOUT; session->timeout = AST_DEFAULT_WEBSOCKET_WRITE_TIMEOUT;
/* Generate the session id */
if (!ast_uuid_generate_str(session->session_id, sizeof(session->session_id))) {
ast_log(LOG_WARNING, "WebSocket connection from '%s' could not be accepted - failed to generate a session id\n",
ast_sockaddr_stringify(&ser->remote_address));
ast_http_error(ser, 500, "Internal Server Error", "Allocation failed");
return 0;
}
if (protocol_handler->session_attempted if (protocol_handler->session_attempted
&& protocol_handler->session_attempted(ser, get_vars, headers)) { && protocol_handler->session_attempted(ser, get_vars, headers, session->session_id)) {
ast_debug(3, "WebSocket connection from '%s' rejected by protocol handler '%s'\n", ast_debug(3, "WebSocket connection from '%s' rejected by protocol handler '%s'\n",
ast_sockaddr_stringify(&ser->remote_address), protocol_handler->name); ast_sockaddr_stringify(&ser->remote_address), protocol_handler->name);
ao2_ref(protocol_handler, -1); ao2_ref(protocol_handler, -1);

20
rest-api-templates/ari_resource.h.mustache
Unescape View File

@ -90,6 +90,18 @@ void ast_ari_{{c_name}}_{{c_nickname}}(struct ast_variable *headers, struct ast_
{{/is_req}} {{/is_req}}
{{#is_websocket}} {{#is_websocket}}
/*!
* \brief {{summary}}
{{#notes}}
*
* {{{notes}}}
{{/notes}}
*
* \retval 0 success
* \retval -1 error
*/
int ast_ari_websocket_{{c_name}}_{{c_nickname}}_init(void);
/*! /*!
* \brief {{summary}} * \brief {{summary}}
{{#notes}} {{#notes}}
@ -100,11 +112,13 @@ void ast_ari_{{c_name}}_{{c_nickname}}(struct ast_variable *headers, struct ast_
* \param ser HTTP TCP/TLS Server Session * \param ser HTTP TCP/TLS Server Session
* \param headers HTTP headers * \param headers HTTP headers
* \param args Swagger parameters * \param args Swagger parameters
* \param session_id The id of the current session.
* *
* \retval 0 success * \retval 0 success
* \retval non-zero error * \retval non-zero error
*/ */
int ast_ari_websocket_{{c_name}}_{{c_nickname}}_attempted(struct ast_tcptls_session_instance *ser, struct ast_variable *headers, struct ast_ari_{{c_name}}_{{c_nickname}}_args *args); int ast_ari_websocket_{{c_name}}_{{c_nickname}}_attempted(struct ast_tcptls_session_instance *ser,
struct ast_variable *headers, struct ast_ari_{{c_name}}_{{c_nickname}}_args *args, const char *session_id);
/*! /*!
* \brief {{summary}} * \brief {{summary}}
@ -116,8 +130,10 @@ int ast_ari_websocket_{{c_name}}_{{c_nickname}}_attempted(struct ast_tcptls_sess
* \param session ARI WebSocket. * \param session ARI WebSocket.
* \param headers HTTP headers. * \param headers HTTP headers.
* \param args Swagger parameters. * \param args Swagger parameters.
* \param session_id The id of the current session.
*/ */
void ast_ari_websocket_{{c_name}}_{{c_nickname}}_established(struct ast_ari_websocket_session *session, struct ast_variable *headers, struct ast_ari_{{c_name}}_{{c_nickname}}_args *args); void ast_ari_websocket_{{c_name}}_{{c_nickname}}_established(struct ast_ari_websocket_session *session,
struct ast_variable *headers, struct ast_ari_{{c_name}}_{{c_nickname}}_args *args);
{{/is_websocket}} {{/is_websocket}}
{{/operations}} {{/operations}}
{{/apis}} {{/apis}}

9
rest-api-templates/res_ari_resource.c.mustache
Unescape View File

@ -137,7 +137,8 @@ fin: __attribute__((unused))
} }
{{/is_req}} {{/is_req}}
{{#is_websocket}} {{#is_websocket}}
static int ast_ari_{{c_name}}_{{c_nickname}}_ws_attempted_cb(struct ast_tcptls_session_instance *ser, struct ast_variable *get_params, struct ast_variable *headers) static int ast_ari_{{c_name}}_{{c_nickname}}_ws_attempted_cb(struct ast_tcptls_session_instance *ser,
struct ast_variable *get_params, struct ast_variable *headers, const char *session_id)
{ {
struct ast_ari_{{c_name}}_{{c_nickname}}_args args = {}; struct ast_ari_{{c_name}}_{{c_nickname}}_args args = {};
{{#has_parameters}} {{#has_parameters}}
@ -156,7 +157,7 @@ static int ast_ari_{{c_name}}_{{c_nickname}}_ws_attempted_cb(struct ast_tcptls_s
{{> param_parsing}} {{> param_parsing}}
res = ast_ari_websocket_{{c_name}}_{{c_nickname}}_attempted(ser, headers, &args); res = ast_ari_websocket_{{c_name}}_{{c_nickname}}_attempted(ser, headers, &args, session_id);
fin: __attribute__((unused)) fin: __attribute__((unused))
if (!response) { if (!response) {
@ -255,6 +256,10 @@ static int load_module(void)
{{#has_websocket}} {{#has_websocket}}
struct ast_websocket_protocol *protocol; struct ast_websocket_protocol *protocol;
if (ast_ari_websocket_{{c_name}}_{{c_nickname}}_init() == -1) {
return AST_MODULE_LOAD_FAILURE;
}
{{full_name}}.ws_server = ast_websocket_server_create(); {{full_name}}.ws_server = ast_websocket_server_create();
if (!{{full_name}}.ws_server) { if (!{{full_name}}.ws_server) {
return AST_MODULE_LOAD_FAILURE; return AST_MODULE_LOAD_FAILURE;

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